1. That gravitational energy is converted to the kinetic energy of the particles. 2. Space travel is achieved through apergy, an anti-gravitational energy force. 3. By harnessing the gravitational energy of other celestial objects, the spacecraft can pick up kinetic energy. 4. The heat it radiates is generated from the gravitational energy released as the cloud gases contract. 5. During the compression, gravitational energy is released. 6. This energy, however, is exactly balanced by the negative gravitational energy of everything pulling on everything else. 7. Gravitational energy could only be transformed into heat energy if the Earth were contracting, which it is not.8. Water supplied to houses come from Shahanur dam which doesn't require electricity and works completely on gravitational energy . 9. Gravitational energy is the potential energy associated with gravitational force, as work is required to elevate objects against Earth's gravity.10. As Red Act said, you can define a " pseudotensor " that includes gravitational energy , but that breaks general covariance.
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